Window lock



Patented July 28, 1925 UNITED; stares ,WILLI/AM A. onoss, or new YORK, N. Y.

wmnow 1.001;.

Application filed. September 26, 1924. Serial No. 740,097.

To all whom it may concern."

Be it known that I, VILLIAM A. Cross, a

citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved lVindow Look, of which the following is a full, clear, and exact description.

The present invention relates to new and useful improvements in window fasteners, and it pertains more particularly to a means for looking the upper and lower sashes of a window against relative movement.

It is one of the primary objects of the in vention to provide anew and improved dc.- vice of this character which serves to lock the sashes against relative movement either in the closed or partially open position.

It is a further object of the invention to provide a device of this character by means of which the sashes may be prevented from rattling.

It is a further object of the invention to provide a device of this character in which the locking member is locked against movement by a separate cam member when the device is in the window-locking or securing osition.

With the above and other objects in view,

reference is had to the accompanying drawings, in which- Figure 1 is a'perspective view partly in section, of a device constructed in accordance with the present invention Fig. 2 is a detail sectional view taken on the line 22 of Fig. 1;

Fig. 3 is a similar view showing the window-locking device in its open position.

Referring more particularly to the drawthe reference numeral 5 designates the meeting rail of the lower sash and 6 designates the meeting rail of the upper sash. The side rail of the upper sash is provided at spaced intervals with a plurality of button-like elements 7 and as more clearly shown in Figs. 2 and 8, these button-like elements 7 have a tapered recess 8.

Carried by the meeting rail 5 of the lower sash there is a base 9, and such base 9 1s secured in position by means of screws 10. Carried by the base 9 there are upwardly standing lugs or ears 11, and pivotally mounted between these lugs or ears 11, by means of a pin or the like 12, there is a member 13 comprising two arms 14 and 15 angular-1y disposed with respect to each other. These arms are not right-angularly disposed. with respect to each other, and as clearly shown, the arm'14has a screwthreaded' recess .15" in which is mounted a threaded bolt 16.- The forward end of thislthreaded bolt 16 is tapered as at 17 and on the rear end thereof it has a tool-receiving kerf by means of which the member 16 is rotated to advance or retract the same relative to the arm 14. The arm 15 is bifurcated and mounted between the furcations thereof, by means of a pin 20, there is a cam member 21, the rear end of which is provided with a finger-piece 22.

The nose 23 of the cam member 21 is eccentrically disposed with respect to its pivotal point for a purpose to be hereinafter described, and the arm 14 is cut out to provide a shoulder 24 which receives the finger-piece 22 when the arm 14 is rocked rearwardly about its pivotal point 12.

The device functions in the following manner:

With the parts in the position shown in Fig. 8, the upper sash is adjusted to the proper position or the-two sashes are adjusted to the desired position relative to each other, after which the arm 14 is swung to the right until the tapered end 17 of the threaded bolt 16 engages in the tapered recess 8 of the button 7. After this has been done the cam member 21 is rocked to the position shown in Fig. 2, in which position it maintains the arm 14 in the forward position and maintains the threaded bolt 16 in engagement with the tapered recess 8 of the button with which it is engaged.

If, now, the threaded bolt 16 be tightened by means of a tool inserted in the kerf 18 thereof, it will be noted that the cam member 21 will be placed under sufficient pressure to prevent operation thereof without previously loosening the threaded bolt 16.

From the foregoing it is apparent that if the threaded bolt 16 is merely engaged with one of the buttons 7 the upper sash will be supported in a partially open position. If, however, the bolt 16 be tightened or forced into the recess of the button 7 by means of a tool, the cam member2l is lockedand either of the sashes is preventedfrom accidental movement.

From the foregoing it is also apparent that all of the objects of the present inven-- tion have been accomplished, and, further, it should be understood that numerous modifications of structure might readily be resorted to Without in the least departing from the scope of the claims.

What is claimed is:

1. A Window lock comprising abase, a member pivotally mounted in said base, a plurality of angularly disposed arms pro jecting from said pivoted member, means carried by one of said arms for preventing pivotal movement of the pivoted member, and adjustable Window-engaging means carried by the other of said arms.

2. A Window lock comprising a base, a member pivotally mounted in said base, a plurality of angularly disposed arms pro jecting from said pivotal member, one of said arms being bifurcated, the other of said arms having a shoulder and locking means for said pivoted member, said locking means being pivotally mounted in said bifurcated arm, and having a portion engageable With said shoulder to prevent movement of said member in one direction.

3. A Window lock comprising a base, a member pivotally mounted in said base, a plurality of angularly disposed arms projecting from said pivotal member, one of said arms being bifurcated, the other of said arms having a shoulder and locking means for said pivoted member, said locking means comprising a cam member pivotally mounted in said bifurcated arm, and having portions engageable respectively With said base and said shoulder to prevent movement of said member in one direction.

4. A Window lock comprising a base adapted for securement to a WlIlClOW sash, a member pivotally mounted on said base and having a plurality of angula rly disposed arms, one of Which is bifurcated, an adjustable Window-engaging member carried by one of said arms, and a pivoted cam member carried by the other of said arms and adapted to engage said base to prevent move ment ofthe pivoted member.

WILLIAM A. GROSS. 

